The longest government shutdown on record cost Delta Air Lines an estimated $200 million, CEO Ed Bastian said Wednesday in the first disclosure by a U.S. airline regarding the shutdown’s financial impact.

Bastian told investors that refunds “grew significantly” as bookings also slowed amid the uncertainty in air travel caused by the 43-day shutdown, contributing to Delta’s loss of about 25 cents per share.

The shutdown, which began Oct. 1, led to long delays at major airports and historic flight cancellations at 40 of the country’s busiest airports as more unpaid air traffic controllers missed work, citing additional stress and the need to take on side jobs. As the shutdown dragged into a second month, the Federal Aviation Administration issued an emergency order requiring commercial air

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